25222920 has 32 divisors (see below), whose sum is σ = 75669120. Its totient is φ = 6726080.

The previous prime is 25222907. The next prime is 25222921. The reversal of 25222920 is 2922252.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (25222921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104976 + ... + 105215.

It is an arithmetic number, because the mean of its divisors is an integer number (2364660).

Almost surely, 2^25222920 is an apocalyptic number.

25222920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25222920 is an abundant number, since it is smaller than the sum of its proper divisors (50446200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25222920 is a wasteful number, since it uses less digits than its factorization.

25222920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210205 (or 210201 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 25222920 is about 5022.2425269993. The cubic root of 25222920 is about 293.2682994026.

The spelling of 25222920 in words is "twenty-five million, two hundred twenty-two thousand, nine hundred twenty".